EP 0171226 A3 19870826 - A METHOD OF MAKING A COMPONENT FOR A MICROELECTRONIC CIRCUIT AND A SEMICONDUCTOR DEVICE AND AN OPTICAL WAVEGUIDE MADE BY THAT METHOD
Title (en)
A METHOD OF MAKING A COMPONENT FOR A MICROELECTRONIC CIRCUIT AND A SEMICONDUCTOR DEVICE AND AN OPTICAL WAVEGUIDE MADE BY THAT METHOD
Publication
Application
Priority
US 63597584 A 19840730
Abstract (en)
[origin: EP0171226A2] A portion of a first layer (14; 34) exposed through an opening (20; 40) in a second layer (18; 38) is chemically converted to a compound having properties different to those of the first layer. By arranging that the conversion to the compound extends beyond the boundary of the opening and removing the compound, further material (24) can be depositied onto the substrate (12) through the opening (20). In this manner, a self-aligned semiconductor device can be formed with the further material (24) serving as the gate of the device. If the conversion to the compound is limited to the portion of the first layer directly below the opening (40) and the compound has an index of refraction different from that of the first layer, the converted portion (36) can serve as an optical waveguide.
IPC 1-7
IPC 8 full level
G02B 6/13 (2006.01); H01L 21/033 (2006.01); H01L 21/28 (2006.01); H01L 21/302 (2006.01); H01L 21/3065 (2006.01); H01L 21/308 (2006.01); H01L 21/311 (2006.01); H01L 21/316 (2006.01); H01L 21/321 (2006.01); H01L 21/338 (2006.01); H01L 29/812 (2006.01); H01S 5/00 (2006.01); H01S 5/02 (2006.01)
CPC (source: EP)
G02B 6/13 (2013.01); H01L 21/02236 (2013.01); H01L 21/02238 (2013.01); H01L 21/02244 (2013.01); H01L 21/0331 (2013.01); H01L 21/0337 (2013.01); H01L 21/3081 (2013.01); H01L 21/3086 (2013.01); H01L 21/31111 (2013.01); H01L 21/31116 (2013.01); H01L 21/321 (2013.01); H01S 5/0205 (2013.01)
Citation (search report)
- [X] US 3737341 A 19730605 - CROSET M, et al
- [X] US 3775262 A 19731127 - HEYERDAHL N
- [A] US 3866310 A 19750218 - DRIVER MICHAEL C, et al
- [A] US 3867148 A 19750218 - O'KEEFFE TERENCE W, et al
- [XP] US 4496419 A 19850129 - NULMAN JAIME [CO], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0171226 A2 19860212; EP 0171226 A3 19870826; EP 0171226 B1 19890719; DE 3571721 D1 19890824; JP H0466099 B2 19921022; JP S6142140 A 19860228
DOCDB simple family (application)
EP 85305242 A 19850723; DE 3571721 T 19850723; JP 7455585 A 19850410